Global analysis of floral longevity reveals latitudinal gradients and biotic and abiotic correlates
- PMID:35611604
- DOI: 10.1111/nph.18271
Global analysis of floral longevity reveals latitudinal gradients and biotic and abiotic correlates
Abstract
The length of time a flower remains open and functional - floral longevity - governs important reproductive processes influencing pollination and mating and varies considerably among angiosperm species. However, little is known about large-scale biogeographic patterns and the correlates of floral longevity. Using published data on floral longevity from 818 angiosperm species in 134 families and 472 locations world-wide, we present the first global quantification of the latitudinal pattern of floral longevity and the relationships between floral longevity and a range of biotic and abiotic factors. Floral longevity exhibited a significant phylogenetic signal and was longer at higher latitudes in both northern and southern hemispheres, even after accounting for elevation. This latitudinal variation was associated with several biotic and abiotic variables. The mean temperature of the flowering season had the highest predictive power for floral longevity, followed by pollen number per flower. Surprisingly, compatibility status, flower size, pollination mode, and growth form had no significant effects on flower longevity. Our results suggest that physiological processes associated with floral maintenance play a key role in explaining latitudinal variation in floral longevity across global ecosystems, with potential implications for floral longevity under global climate change and species distributions.
Keywords: flower life span; global climate change; latitudinal variation; mating systems; pollen limitation; pollinator guilds; pollinator reliability.
© 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.
References
- Aizen MO. 1993. Self-pollination shortens flower lifetime in Portulaca umbraticola H.B.K. (Portulacaceae). International Journal of Plant Sciences 154: 412-415.
- Arroyo MTK, Armesto JJ, Primack RB. 1985. Community studies in pollination ecology in the high temperate Andes of central Chile II. Effect of temperature on visitation rates and pollination possibilities. Plant Systematics and Evolution 149: 187-203.
- Arroyo MTK, Dudley LS, Jespersen G, Pacheco DA, Cavieres LA. 2013. Temperature-driven flower longevity in a high-alpine species of Oxalis influences reproductive assurance. New Phytologist 200: 1260-1268.
- Ashman T-L. 2004. Flower longevity. In: Nooden LD, ed. Plant cell death process. London, UK: Elsevier, 349-362.
- Ashman T-L, Schoen DJ. 1994. How long should flower live? Nature 371: 788-791.
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